The Ivishak River /ˈiːviːʃɑːk/ is a 95-mile (153 km) tributary of the Sagavanirktok River in the North Slope Borough of the U.S. state of Alaska.[1] Fed by glaciers at the headwaters, the Ivishak flows northeast, then northwest, through the Philip Smith Mountains and the northern foothills of the Arctic National Wildlife Refuge. It enters the Sagavanirktok River on the coastal plain south of Prudhoe Bay.[3]

Ivishak River
Upper Ivishak River Valley
Location of the mouth of the Ivishak River in Alaska
Location
Country	United States
State	Alaska
Borough	North Slope
Physical characteristics
Source	Philip Smith Mountains
• location	Brooks Range
• coordinates	68°34′25″N 147°16′43″W[1]
• elevation	5,258 ft (1,603 m)[2]
Mouth	Sagavanirktok River
• location	55 miles (89 km) south of Prudhoe Bay[1]
• coordinates	69°29′55″N 148°30′22″W[1]
• elevation	538 ft (164 m)[1]
Length	95 mi (153 km)[1]
National Wild and Scenic River
Type	Wild
Designated	December 2, 1980

On December 2, 1980, 80 miles (129 km) of the Ivishak was designated a National Wild and Scenic River. The protected segments, including the headwaters, an unnamed tributary from Porcupine Lake, and all but the lowermost part of the main stem, lie within the wildlife refuge.[3]

See also

• List of rivers of Alaska
• List of National Wild and Scenic Rivers

References

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[de] Ivishak River

[ru] Айвишак